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Analysis of USA National Phenology Network data shows that first spring leaves now emerge earlier in 88% of 242 major U.S. cities, shifting by an average of six days since 1981. This trend, combined with a freeze-free growing season that has stretched 21 days longer on average across 173 cities between 1970 and 2025, extends allergy seasons and increases the risk of 'false spring' crop losses. Ecological disruptions include potential mismatches between bird migration and the peak abundance of food sources.

Earthjustice is utilizing litigation and public mobilization to defend U.S. biodiversity and ecosystems against Trump administration policies. Key efforts include challenging oil and gas leasing in the Arctic National Wildlife Refuge, fighting coal mine expansions in the Northern Rockies, and defending the Endangered Species Act (ESA) and the Roadless Rule. The organization is also pursuing the restoration of salmon in the Columbia River watershed and the reintroduction of gray wolves in Colorado, while challenging the legality of a detention center in the Everglades and the opening of the Pacific Islands Heritage Marine National Monument to commercial fishing.

The petition argues that the 1993 Recovery Plan's compartmentalized approach of managing grizzly bears in isolated recovery areas is outdated and fails to ensure long-term genetic and demographic resiliency. It proposes a unified metapopulation framework that manages bears as a single interconnected population across the Northern Rockies, requiring the establishment of natural connectivity and the implementation of stricter regulatory mechanisms to reduce human-caused mortality. The petitioners oppose current efforts by Idaho, Montana, and Wyoming to delist grizzly bears, asserting that recovery is premature without a connected metapopulation and durable protections against threats such as habitat fragmentation, climate change, and lethal management policies.

The report finds that September 2024 was unusually warm across much of the U.S., with 171 of 191 analyzed cities experiencing warmer-than-normal temperatures. While the highest temperature anomalies occurred in the Midwest and northern Great Plains, the strongest climate change signals (CSI values) were concentrated in the Southwest and Florida.

Analysis of 241 U.S. locations from 1970 to 2022 shows that fall temperatures have increased by an average of 2.4°F in 232 cities, with the most intense warming occurring in the Southwest. This trend is characterized by an increase in above-normal fall days, which prolongs risks related to heat-related illness, wildfires, and allergies, while increasing energy demand for cooling.

Earthjustice argues that the FWS proposal to delist gray wolves in the Northern Rockies is illegal and biologically unsound. The organization contends that the proposed DPS boundaries are arbitrary, demographic recovery goals are set too low to ensure long-term viability, and state regulatory frameworks in Idaho, Wyoming, and Montana are inadequate to protect wolves from aggressive killing. Furthermore, Earthjustice asserts that the FWS failed to account for habitat fragmentation from roading, the loss of historic range, and the lack of guaranteed funding for management activities.